In the late 50's and early 60's, we were required to wear a T-shirt, shorts, jock, and tennis shoes. If you forgot the gear, you then had to remove the street clothes of pants, shirt and regular shoes, and just do the activities in your underwear and socks. We had one person come to class without his gear and the coach made him remove the street clothing. BUT he was freeballing and no socks. Thus naked for this class period. I know he never did forget his PE clothes again. If it happened again and forgot the clothes, all would just skip class and go to detention.